若丨x-y+3丨与丨x+y-1995丨互为相反数,则x+2yx−y
若丨x-y+3丨与丨x+y-1995丨互为相反数,则x+2yx−y
若|x-y+3|与|x+y-1999|互为相反数,求x+2yx−y
若|x-y+3|与|x+y-1999|互为相反数,求x+yx−y
若丨2x+6丨与丨3-y丨互为相反数,则x/y=?
若丨x-y+3丨与丨x-y-1999丨互为相反数,求x+y/x-y的值
若√x-2y+9与√丨x-y-3丨互为相反数,则x+y的为
已知:x2-4x+4与|y-1|互为相反数,则式子(xy−yx)÷(x+y)
若丨x--2丨与(y+3)²互为相反数,则y的x次方的值为( )
丨X-2丨与(y+1)2互为相反数,则2X+Y的值
已知(x+3)^2与丨y-2丨互为相反数,求x^y的值,
若x、y为实数,丨x-2丨与根号y+5互为相反数,则x+y=
若丨3x-y丨与(2x+y-8)的平方互为相反数,则3x+y等于多少?